5326602-XIM-B-1019
32
Johnson Controls Ducted Systems
24V~ IN Pin connections at right on upper edge of economizer board
C
COM
24 VAC transformer Common referenced to
cabinet ground
24 VAC common connection to power the economizer board.
Connects through circuit traces to C/COM terminals and pins
distributed on the economizer board.
R
HOT
24 VAC transformer HOT
24 VAC hot connection to power the economizer board.
Connects through circuit traces to R/24V~ terminals and pins
distributed on the economizer board.
ANALOG INPUTS Terminal on lower edge of economizer board
R
24V~
24 VAC hot supplied for the outdoor air
humidity sensor
Connects through circuit trace to 24V~ IN pin HOT
IN3
OAH
0-10 VDC positive input from the Outdoor Air
Humidity sensor
OAH parameter reports input status (0-100%H). Used in outdoor
air enthalpy calculation for dual enthalpy economizer free cooling
changeover.
C
COM
24 VAC common/0-10 VDC negative for the
outdoor air humidity sensor
Connects through circuit trace to 24V~ IN pin COM
R
24V~
24 VAC hot supplied for the supply air humidity
sensor
Connects through circuit trace to 24V~ IN pin HOT
IN4
SAH
0-10 VDC positive input from the Supply Air
Humidity sensor
SAH parameter reports input status (0-100%H). Unused in
current control revision.
C
COM
24 VAC common/0-10 VDC negative for the
supply air humidity sensor
Connects through circuit trace to 24V~ IN pin COM
R
24V~
24 VAC hot supplied for the indoor air quality
sensor
Connects through circuit trace to 24V~ IN pin HOT
IN5
IAQ
0-10 VDC positive input from the Indoor Air
Quality sensor
IAQRange parameter sets the CO2 parts per million measured
by the indoor air quality sensor when it outputs 10 VDC; IAQ
parameter reports input status (0-5000ppm). Used for demand
ventilation functions if the NetIAQ parameter indicates ?Unrel.
C
COM
24 VAC common/0-10 VDC negative for the
indoor air quality sensor
Connects through circuit trace to 24V~ IN pin COM
R
24V~
24 VAC hot supplied for the outdoor air quality
sensor
Connects through circuit trace to 24V~ IN pin HOT
IN6
OAQ
0-10 VDC positive input from the Outdoor Air
Quality sensor
OAQRange parameter sets the CO2 parts per million measured
by the outdoor air quality sensor when it outputs 10 VDC; OAQ
parameter reports input status (0-5000ppm). Used for demand
ventilation function when DVent-Mode selection is Diff between
IAQ and OAQ and the NetOAQ parameter indicates ?Unrel.
C
COM
24 VAC common/0-10 VDC negative for the
outdoor air quality sensor
Connects through circuit trace to 24V~ IN pin COM
R
24V~
24 VAC hot supplied for the air monitoring
station sensor
Connects through circuit trace to 24V~ IN pin HOT
IN7
FR AIR
0-10 VDC positive input from the air monitoring
station sensor
MOA-Range parameter sets the cubic feet per minute/liters per
second measured by the air monitoring station sensor when it
outputs 10 VDC; Fr Air parameter reports input status (0-
50000CFM/23595lps). Used for economizer minimum position
reset in speed-controlled indoor blower applications.
C
COM
24 VAC common/0-10 VDC negative for the air
monitoring station sensor
Connects through circuit trace to 24V~ IN pin COM
Table 20: Smart Equipment™ Economizer Board Details (Continued)
Board
Label
Cover
Label
Description
Function & Comments
